#include<iostream>
#define _ using
#define __ namespace
#define ___ std
#define ____ ;
#define _____ int
#define ______ main
#define _______ (){
#define ________ oo
#define _________ =
#define __________ 0
#define ___________ for
#define ____________ (
#define _____________ size_t
#define ______________ i
#define _______________ <
#define ________________ 20
#define _________________ ++)
#define __________________ {
#define ___________________ ++;
#define ____________________ }
#define _____________________ cout
#define ______________________ <<
#define _______________________ return

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